&引用；详情：&引用；JSON解析错误-期望值：第1行第1列（字符0）"；django rest框架

当我通过

XMLHttpRequest

发出post请求时，它工作得很好，但是当我在django API视图中发出get请求时

http://127.0.0.1:8000/create/

我在文本框中写入了一个新文本，我得到了一个错误

“详细信息”：“JSON解析错误-期望值：第1行第1列（字符0）”

这是我的文件代码。

serlizers.py

该应用程序就像我关注的推特应用程序一样

settings.py

from django.shortcuts import render, redirect
from .models import Tweet
from django.utils.http import is_safe_url
from .serializers import CreateTweeSerializers, TweeSerializers, TweetActionsSerlizer
from rest_framework.response import Response
from rest_framework.decorators import api_view, authentication_classes, permission_classes
from rest_framework.permissions import IsAuthenticated
from rest_framework.authentication import SessionAuthentication
# this woll make POST request work and re-render the new posts.


@api_view(["POST"])
# @authentication_classes([SessionAuthentication,MyCustomAuth])
@permission_classes([IsAuthenticated])
def post_create_view(request, *args, **kwargs):
    serializer = CreateTweeSerializers(data=request.POST)
    # raise_exception= if form.error reutnr error and status400
    if serializer.is_valid(raise_exception=True):
        serializer.save(user=request.user)
        return Response(serializer.data, status=201)
    return Response({}, status=400)


def home_view(request, *args, **kwards):
    return render(request, 'pages/home.html', context={}, status=200)


@api_view(["GET"])
def post_view(request, postId, *args, **kwards):
    qs = Tweet.objects.filter(id=postId)
    if not qs.exists():
        return Response({}, status=404)
    return Response(TweeSerializers(qs.first()).data, status=200)


@api_view(["DELETE", 'POST'])
@permission_classes([IsAuthenticated])
def post_delete_view(request, postId, *args, **kwards):
    qs = Tweet.objects.filter(id=postId)
    if not qs.exists():
        return Response({}, status=404)
    qs = qs.filter(user=request.user)
    if not qs.exists():
        return Response({"message": 'you cant delete this Post'}, status=401)
    obj = qs.first()
    obj.delete()
    return Response({'Message': "post removed"}, status=200)


@api_view(["GET"])
def posts_list_view(request, *args, **kwards):
    qs = Tweet.objects.all()
    serializer = TweeSerializers(qs, many=True)
    return Response(serializer.data)


@api_view(['POST'])
@permission_classes([IsAuthenticated])
def post_actions_view(request, *args, **kwards):
    '''
    actions = like,unlike,retweet
    '''
    # i dont understand how request.POST will send the id and the action type to the serlizer?
    # data=request.POST was a mistake
    serlizer = TweetActionsSerlizer(data=request.data)
    print(request.data)
    if serlizer.is_valid(raise_exception=True):
        data = serlizer.validated_data
        post_id = data.get('id')
        action = data.get('action')
        # you must serlize data to the get them.
        content = data.get('content')
    qs = Tweet.objects.filter(id=post_id)
    if not qs.exists():
        return Response({}, status=404)
    obj = qs.first()
    if action == 'like':
        obj.like.add(request.user)
        return Response(serlizer.data, status=200)
    elif action == 'unlike':
        obj.like.remove(request.user)
    elif action == 'retweet':
        newTwee = Tweet.objects.create(
            user=request.user, parent=obj, content=content)
        serlizer = TweeSerializers(newTwee)
        return Response(serlizer.data, status=201)

    return Response({}, status=200)

设置主要是默认设置，但最后我添加了restframework设置。

views.py

from django.shortcuts import render, redirect
from .models import Tweet
from django.utils.http import is_safe_url
from .serializers import CreateTweeSerializers, TweeSerializers, TweetActionsSerlizer
from rest_framework.response import Response
from rest_framework.decorators import api_view, authentication_classes, permission_classes
from rest_framework.permissions import IsAuthenticated
from rest_framework.authentication import SessionAuthentication
# this woll make POST request work and re-render the new posts.


@api_view(["POST"])
# @authentication_classes([SessionAuthentication,MyCustomAuth])
@permission_classes([IsAuthenticated])
def post_create_view(request, *args, **kwargs):
    serializer = CreateTweeSerializers(data=request.POST)
    # raise_exception= if form.error reutnr error and status400
    if serializer.is_valid(raise_exception=True):
        serializer.save(user=request.user)
        return Response(serializer.data, status=201)
    return Response({}, status=400)


def home_view(request, *args, **kwards):
    return render(request, 'pages/home.html', context={}, status=200)


@api_view(["GET"])
def post_view(request, postId, *args, **kwards):
    qs = Tweet.objects.filter(id=postId)
    if not qs.exists():
        return Response({}, status=404)
    return Response(TweeSerializers(qs.first()).data, status=200)


@api_view(["DELETE", 'POST'])
@permission_classes([IsAuthenticated])
def post_delete_view(request, postId, *args, **kwards):
    qs = Tweet.objects.filter(id=postId)
    if not qs.exists():
        return Response({}, status=404)
    qs = qs.filter(user=request.user)
    if not qs.exists():
        return Response({"message": 'you cant delete this Post'}, status=401)
    obj = qs.first()
    obj.delete()
    return Response({'Message': "post removed"}, status=200)


@api_view(["GET"])
def posts_list_view(request, *args, **kwards):
    qs = Tweet.objects.all()
    serializer = TweeSerializers(qs, many=True)
    return Response(serializer.data)


@api_view(['POST'])
@permission_classes([IsAuthenticated])
def post_actions_view(request, *args, **kwards):
    '''
    actions = like,unlike,retweet
    '''
    # i dont understand how request.POST will send the id and the action type to the serlizer?
    # data=request.POST was a mistake
    serlizer = TweetActionsSerlizer(data=request.data)
    print(request.data)
    if serlizer.is_valid(raise_exception=True):
        data = serlizer.validated_data
        post_id = data.get('id')
        action = data.get('action')
        # you must serlize data to the get them.
        content = data.get('content')
    qs = Tweet.objects.filter(id=post_id)
    if not qs.exists():
        return Response({}, status=404)
    obj = qs.first()
    if action == 'like':
        obj.like.add(request.user)
        return Response(serlizer.data, status=200)
    elif action == 'unlike':
        obj.like.remove(request.user)
    elif action == 'retweet':
        newTwee = Tweet.objects.create(
            user=request.user, parent=obj, content=content)
        serlizer = TweeSerializers(newTwee)
        return Response(serlizer.data, status=201)

    return Response({}, status=200)

---

我发现你的问题是：）

我所做的（导致屏幕上出现“JSON解析错误-期望值：第1行第1列（char 0）”消息），或者您可以通过curl或Postman重复相同的操作：

身份验证为超级用户，然后在上打开浏览器

在内容文本区域中键入“somestring”

单击Post btn（使用选定的mediatype json）

好吧，为什么错了在视图中，request.data的解析方式类似于

{“somestring”}

，但它应该类似于

{“content”：“somestring”}

那么它是如何正确的（这里我使用了令牌身份验证）

请求

POST http://127.0.0.1:8000/create/
Accept: application/json
Content-Type: application/json
Authorization: Token e6f2fdd681d0b023a73cb06e9720867adeb96daf

{"content":  "a"}

回应

{
  "id": 10,
  "content": "a",
  "like": []
}

Response code: 201 (Created); Time: 50ms; Content length: 33 bytes

---

那么，您不应该向

/create

发送POST请求吗？如果它想要创造一些东西，它需要数据，对吗？你为什么用GET？您可能需要一个GET请求来

http://127.0.0.1:8000/items/

（或者不管你在

url.py中如何命名它）我使用get来获取数据，它与POST无关，我只是在代码中加入了，因为我不知道这是否重要。嗯，看起来不错，谢谢你的链接@madzohan是的，好主意，我刚刚把代码推到github。我还使用了django 3，课程使用了django 2.2，我使用了django allauth，而原来的课程没有，我做了更多的修改。兄弟，这很容易，但不要放弃-完成课程和drf手册）
{
  "id": 10,
  "content": "a",
  "like": []
}

Response code: 201 (Created); Time: 50ms; Content length: 33 bytes